Forecasters say Tropical Storm Cristina has formed off the southwestern coast of Mexico and is expected to blow into a hurricane later in the week.
The National Hurricane Center in Miami, Florida, says the storm late Monday was about 155 miles (255 kilometers) south-southwest of Zihuatanejo (see-wah-tah-NAY´-hoh), Mexico.
Maximum sustained winds are about 40 mph (65 kph).
